Green Goddess Salmon Grain Bowls

Name: Green Goddess Salmon Grain Bowls
Ingredients: 2 tbsp. olive oil; 2 1/2 tsp. kosher salt; 1 c. quinoa, rinsed; Grated zest of 1 lemon, plus the juice of 2 lemons; One 1 1/2-pound piece center-cut salmon fillet; 1/2 tsp. black pepper, plus more to taste; 1 tsp. dried dill; 1 c. fresh parsley; 6 c. baby spinach; 2 ripe avocados, halved, pitted and peeled; 1/2 c. mayonnaise; 1/3 c. buttermilk; 1 garlic clove, crushed and peeled; 1 tbsp. capers in brine, drained; 3 c. finely shredded red cabbage; 4 oz. ounces sugar snap peas, trimmed and sliced into 1/2-inch pieces; 1/4 c. salted roasted sunflower seeds